库水作用下谭家河滑坡变形特征分析

Deformation Characteristic Analysis of Tanjiahe Landslide under the Effect of Reservoir Water

为分析谭家河滑坡与库水的响应机制,在实地调研和现有资料分析的基础上,通过归纳分析、数据挖掘、数值模拟的方法,研究了谭家河滑坡的变形特征及库水作用对滑坡的影响。结果表明,谭家河滑坡整体处于蠕变阶段,且中后部变形比前部变形大,是渐进推移式滑坡。滑坡的变形速率与库水位上升呈正相关关系,库水上升时滑坡剪力增大,变形区加速扩展。研究成果可为滑坡监测及预警提供参考。

In order to analyze the response of landslide on reservoir water,inductive analysis,data mining and numerical simulation were used to study the deformation characteristics and the influence of reservoir water for Tanjiahe landslide on the basis of field investigation and analysis of existing information.The results show that Tanjiahe landslide is in creep stage on the whole,and the deformation in the front portion is larger than that of the rear,which belongs to progressive displacive landslide.The water level rise is positively correlated to the deformation rate of Tanjiahe landslide.Moreover,the shear increases and deformation area gradually extends for the landslide when the reservoir water rises.The research results can provide reference formonitoring and early warning landslide.